.p-cent{
    color: white;
}
.ul-left{
    color: white;
    font-size: 20px;
    list-style: none;
    display: flex;
}
.ul-left input{
   margin-left: 10px;
}
.btn-xin{
    width: 1200px;
    height: 38px;
    font-size: 18px;
    color: white;
    border-radius: 3px;
    background-color: #343a3f;
}
.btn-xin:hover{
    background-color: black;
}
.select-cen{
    width: 200px;
    height: 35px;
}